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1 <br /> 1 <br /> 8.0 Site Monitoring <br /> 8.7 Air Monitoring <br /> Air monitoring is essential to ensure that all field personnel are adequately protected from <br /> airborne contaminants. The levels of organic vapors in the work area will be monitored using <br /> a photoionization detector (PID) or flame ionization detector (FID) whenever work that might <br /> generate hazardous airborne concentrations of contaminants. <br /> Combustible gas readings shall be conducted in the work areas if flammable contaminants are <br /> anticipated. All air monitoring results shall be documented in project logs. <br /> The HS Manager may conduct integrated personal exposure monitoring. Integrated air <br /> samples will be analyzed through a laboratory accredited by the American Industrial Hygiene <br /> Association (AIHA). <br /> 8.i.1 Locations to be Monitored <br /> All personal, integrated air monitoring samples and direct reading instrumentation readings <br /> taken for the purpose of determining appropriate health and safety precautions shall be <br /> collected/taken in the approximate "breathing zone" of site personnel. <br /> If entry into a confined space is deemed necessary, combustible gas, oxygen, and total <br /> organics readings will be collected and recorded from the top, middle, and bottom of the <br /> excavation prior to initial entry. Once the IT qualified person and/or HS Representative has <br />' reviewed this information, determined the PPE necessary for entry, and the entry has been <br /> initiated, readings shall be taken in the approximate "breathing zone" of the IT employee(s) <br /> working within the confined space. Readings may also be taken in other locations to <br /> determine areas of localized contamination or combustibility within the confined space. Work <br /> shall stop and all personnel shall exit the confined space when readings exceed acceptable <br /> values at any location within the space. <br /> i <br /> mo5-09-9aNsrAa X 6a 8-1 <br />